Optical lens having high-frequency perturbation information

Abstract

The present invention relates to the field of optical devices for myopia prevention and control, and in particular to an optical lens having high-frequency perturbation information. The optical lens comprises a base surface profile area and a high-frequency control area; the center of the base surface profile area coincides with the center of the optical lens; the high-frequency control area is arranged around the outer peripheral side of the base surface profile area; the high-frequency control area comprises a plurality of high-frequency lens units; the plurality of high-frequency lens units are arranged closely adjacent to each other; the surface profile of each high-frequency lens unit has, in at least one of the radial direction or the tangential direction of the unit, a surface profile structure with at least two cycles of height undulations. In each high-frequency lens unit of the present invention, a microstructured surface profile predominantly induces high-frequency perturbations on the retina, thereby effectively reducing the adverse effects on visual performance caused by low-frequency perturbations from conventional spherical lenses, and thus ensuring the visual quality. Additionally, each high-frequency lens unit has at least two cycles of height undulations in at least one direction, thereby providing continuously varying dynamic stimulation for the retina so as to slow down the adaptation rate of the retina.

Description

An optical lens with high-frequency disturbance information Technical Field

[0001] This invention relates to the field of optical devices for myopia control, and more particularly to an optical lens with high-frequency disturbance information. Background Technology

[0002] As shown in Figure 2, the microstructure lens units in traditional myopia control glasses are spherical lenses. Spherical lenses typically modulate light, generating more low-frequency information. Therefore, the disturbance to the retina caused by this microstructure is a low-frequency disturbance, and this low-frequency information is prone to problems such as ghosting and double vision, significantly impacting visual quality. To balance visual quality, these lenses often require a large gap between the microstructure lens units to provide clear vision through the base zone within that gap. However, this dispersed arrangement results in low space utilization; it is essentially a compromise made to maintain visual quality, which weakens the intensity of the disturbance to the retina caused by the microstructure lens units, thus reducing the myopia control effect.

[0003] Furthermore, the spherical lens of the microstructure lens unit has complete rotational symmetry and axial symmetry. Therefore, the stimulation signal within a single microstructure lens unit is isotropic. This highly consistent stimulation signal can easily lead to retinal adaptation after long-term wear, thus causing a gradual decline in the control effect. Summary of the Invention

[0004] In view of this, the present invention provides an optical lens with high-frequency disturbance information, which at least partially solves the problems existing in the prior art.

[0005] According to one aspect of the present invention, an optical lens with high-frequency disturbance information is provided, the optical lens comprising: a basic surface region and a high-frequency control region.

[0006] The center of the basic surface area coincides with the center of the optical lens, and the surface of the optical lens located in the basic surface area is used to form a clear visual image;

[0007] A high-frequency control region surrounds the outer periphery of the base surface area. This region includes multiple high-frequency lens units arranged closely adjacent to each other. The ratio of the intensity of the high-frequency signal generated by the optical lens surface in the high-frequency control region to the intensity of all signals generated by the optical lens surface in the high-frequency control region is greater than a high-frequency proportion threshold. The signal intensity is the magnitude of the imaginary modulus of the signal component represented by each frequency domain point after a two-dimensional Fourier transform of the optical lens surface in the high-frequency control region. The high-frequency signal is a signal with a spatial frequency higher than the frequency limit. The frequency limit ranges from [0.2mm]. -1 5mm -1 ];

[0008] Each high-frequency lens unit has a surface structure with at least two height undulation cycles in any at least one direction, either radial or tangential. Each pair of peaks and troughs in the surface structure constitutes a height undulation cycle. Local maxima in the height direction of the surface structure are peaks, and local minima are troughs. The tangential direction is the circumferential direction of the high-frequency lens unit, and the radial direction is any diameter direction of the high-frequency lens unit.

[0009] Furthermore, the center of the microstructure surface in the high-frequency lens unit is located at the geometric center of the high-frequency lens unit, or the center of the microstructure surface in the high-frequency lens unit is offset relative to the geometric center of the high-frequency lens unit.

[0010] The sum of the eccentric vectors V of each high-frequency lens unit within any eccentric region satisfies the following condition: |V|<a;

[0011] Where |V| is the modulus of V; Vi is the eccentric vector within the eccentric region that points from the geometric center of the high-frequency lens unit to the center of the microstructure surface after the high-frequency lens unit is offset; n is the number of complete high-frequency lens units within the eccentric region, n≥2; a<0.2nR, where R is the radius of the circumcircle of the high-frequency lens unit.

[0012] Furthermore, the height Z(r) of any point in the surface structure of the high-frequency lens unit satisfies the following condition:

[0013] Where r is the projected distance between the current point and the center of the microstructure surface; r0 is the length from the center of the microstructure surface to the boundary of the corresponding microstructure surface on the radial section where the current point is located, and the shape formed by all radial sections in the microstructure surface is a regular polygon; A1 is the microstructure amplitude; T1 is the normalized period, T1∈(0,1).

[0014] Furthermore, regular polygons are equilateral triangles, squares, or regular hexagons.

[0015] Furthermore, the height Z1(r) of any point in the surface structure of the high-frequency lens unit that is a distance r from the center of the microstructure surface satisfies the following condition:

[0016] Where r is the projected distance between the current point and the center of the microstructure surface; d is the diameter of the circumcircle of the microstructure surface; α j is the coefficient of the j-th term of the radial profile polynomial of the microstructure surface, and w is the degree of the highest-degree term of the radial profile polynomial of the microstructure surface.

[0017] Furthermore, with the center of the microstructure surface as the origin and the positive horizontal direction as the reference axis, the height Z2(θ) of each point on the radial section of the surface structure of the high-frequency lens unit at an angle θ to the reference axis satisfies the following condition:

[0018] Where A2 is the tangential amplitude of the microstructure; T2 is the angular period, and T2 is the angular value; θ0 is the phase adjustment.

[0019] Furthermore, the height of any point in the surface structure of the high-frequency lens unit is generated by fusing the height of the radially undulating surface and the height of the tangentially undulating surface.

[0020] The height Z1(r) of the radial wave profile satisfies the following condition:

[0021] Where r is the projected distance between the current point and the center of the microstructure surface; d is the diameter of the circumcircle of the microstructure surface; α j is the coefficient of the j-th term of the radial profile polynomial of the microstructure surface, and w is the degree of the highest-degree term of the radial profile polynomial of the microstructure surface.

[0022] The height of the tangential wave profile satisfies the following condition:

[0023] With the center of the microstructure surface as the origin and the positive horizontal direction as the reference axis, the height Z2(θ) of each point on the radial section of the surface structure of the high-frequency lens unit that makes an angle θ with the reference axis satisfies the following condition:

[0024] Where A2 is the tangential amplitude of the microstructure; T2 is the angular period, and T2 is the angular value; θ0 is the phase adjustment.

[0025] Furthermore, the frequency limit is 1mm. -1 .

[0026] Furthermore, the outer edge of the high-frequency lens unit has a regular polygon structure, which can be an equilateral triangle, a square, or a regular hexagon.

[0027] Furthermore, the high-frequency ratio threshold ranges from [0.7, 0.8].

[0028] Furthermore, the threshold value for high frequency ratio is set to 0.8.

[0029] Furthermore, the basic surface area is circular or polygonal, and the area of ​​the basic surface area is greater than or equal to the area of ​​the corresponding projection area on the optical lens of the normal visual field of the human eye. The optical lens surface in the basic surface area is spherical or aspherical.

[0030] Furthermore, if the base surface area is circular, the diameter of the base surface area can be in the range of [2mm, 12mm].

[0031] The technical solution of the present invention has at least the following beneficial effects:

[0032] The optical lens of this invention includes a basic surface area and a high-frequency control area. The basic surface area is a basic mirror surface without any high-frequency lens units that have a modulation function, covering the clear area at the center of the human eye's field of vision, thereby obtaining a clear visual effect from this area. Then, a high-frequency control area is set around the basic surface area. Through the high-frequency disturbance information generated by the high-frequency lens units therein, high-frequency stimulation information is generated for the blurred areas in the periphery of the field of vision, thereby preventing and controlling myopia.

[0033] Compared to the low-frequency disturbances of traditional spherical lenses, the microstructure surface of the high-frequency lens unit of this invention mainly affects the retina with high-frequency disturbances, thereby effectively reducing the side effects of low-frequency disturbances generated by traditional spherical lenses on visual effects and ensuring visual quality.

[0034] Meanwhile, the surface profile of the high-frequency lens unit has at least two height fluctuation periods in at least one direction, either radial or tangential. This results in different perturbation signals in different directions within different high-frequency lens units, which can provide continuously changing dynamic stimulation to the retina, thereby slowing down the retina's adaptation speed and enhancing the sustainability of the control effect.

[0035] In addition, the different high-frequency lens units in this invention are seamlessly and densely arranged, which makes better use of space and facilitates the application of stronger perturbation high-frequency stimulation to improve the myopia control effect. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 is a schematic diagram of the structure of an optical lens with high-frequency disturbance information according to an embodiment of this application. In the figure, a is an overall structural diagram of the lens, b is a partial magnified surface height diagram of the dashed circle area (i.e., D6) in a, the colored legend in the figure represents the height information of the surface, D6 is a local area in the high-frequency control area, wherein the diameter of D6 is greater than or equal to 3 times the circumcircle diameter of the high-frequency lens unit, and c is a partial magnified surface height diagram of a certain high-frequency lens unit in b.

[0038] Figure 2 is a schematic diagram of relevant information for myopia control glasses in the prior art. In the figure, a is a schematic diagram of the height of the surface viewed from above within D6, with colored legends representing the height information of the surface; b is the surface of a after undergoing two-dimensional fast Fourier transform (2D FFT). A schematic diagram of the frequency domain information after the transformation, where the colored legend represents spatial frequency intensity information; c is a schematic diagram of the surface height information of the inner surface in the radial section direction; d is a schematic diagram of the surface height of a single microstructure lens unit in a; e is a schematic diagram of the surface fluctuation information of the microstructure lens unit in d in the unit radial direction, where the horizontal axis (X-axis) represents the relative position of each point in the unit radial direction to the geometric center of the microstructure lens unit, and the vertical axis (Z-axis) represents the height information of the surface corresponding to each point in the unit radial direction; f is a schematic diagram of the surface fluctuation information of the microstructure lens unit in d in the unit tangential direction; where the horizontal axis (X-axis) represents the angle between the line connecting each point in the unit tangential direction to the geometric center of the microstructure lens unit and the unit radial direction, and the vertical axis (Z-axis) represents the height information of the surface corresponding to each point in the unit tangential direction.

[0039] Figure 3 is a schematic diagram of the microstructure surface center offset in another embodiment of the present application.

[0040] Figure 4 is a schematic diagram showing the physical quantities of a microstructure surface with regular polygonal edges in a top view of another embodiment of this application.

[0041] Figure 5.1 is a schematic diagram of relevant information of the high-frequency lens unit when the edge of the microstructure surface is a regular hexagonal surface structure in another embodiment of this application. In this figure, a is a schematic diagram of the surface height of a single high-frequency lens unit; b is a three-dimensional schematic diagram of the surface of a single high-frequency lens unit; c is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in a in the tangential direction of the unit; d is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in a in the radial direction of the unit.

[0042] Figure 5.2 is a schematic diagram of relevant information in region D6 when the top view of the microstructure surface is a regular hexagonal surface structure in another embodiment. In this diagram, a is a schematic diagram of the surface height in region D6; b is a schematic diagram of the frequency domain information of the surface in region D6 after two-dimensional fast Fourier transform; and c is a schematic diagram of the surface undulation information of the surface in region a in the radial direction of D6.

[0043] Figure 6.1 is a top view of a microstructure surface with hexagonal edges in another embodiment of this application, and a schematic diagram of relevant information of the high-frequency lens unit when regular eccentricity is introduced. In this figure, a is a schematic diagram of the surface height of a single high-frequency lens unit; b is a three-dimensional schematic diagram of the surface of a single high-frequency lens unit; c is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in a in the tangential direction of the unit; and d is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in a in the radial direction of the unit.

[0044] Figure 6.2 is a top view of a microstructure surface with hexagonal edges in another embodiment, and a schematic diagram of relevant information in the D6 region when regular eccentricity is introduced. In the figure, a is a schematic diagram of the surface height in the D6 region; b is a schematic diagram of the frequency domain information of the surface in the D6 region after two-dimensional fast Fourier transform; and c is a schematic diagram of the surface fluctuation information of the surface in the D6 radial direction in a.

[0045] Figure 7.1 is a top view of a microstructure surface with hexagonal edges in another embodiment of this application, and a schematic diagram of relevant information of the high-frequency lens unit when irregular eccentricity is introduced. In this figure, a is a schematic diagram of the surface height of a single high-frequency lens unit; b is a three-dimensional schematic diagram of the surface of a single high-frequency lens unit; c is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in a in the tangential direction of the unit; and d is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in a in the radial direction of the unit.

[0046] Figure 7.2 is a top view of a microstructure surface with hexagonal edges in another embodiment, and a schematic diagram of relevant information in the D6 region when irregular eccentricity is introduced. In the figure, a is a schematic diagram of the surface height in the D6 region; b is a schematic diagram of the frequency domain information of the surface in the D6 region after two-dimensional fast Fourier transform; and c is a schematic diagram of the surface fluctuation information of the surface in the D6 radial direction in a.

[0047] Figure 8.1 is a top view of a microstructure surface with square edges in another embodiment of this application, and a schematic diagram of relevant information of the high-frequency lens unit when irregular eccentricity is introduced. In this figure, a is a schematic diagram of the surface height of a single high-frequency lens unit; b is a three-dimensional schematic diagram of the surface of a single high-frequency lens unit; c is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in a in the tangential direction of the unit; and d is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in a in the radial direction of the unit.

[0048] Figure 8.2 is a top view of a microstructure surface with square edges in another embodiment, and a schematic diagram of relevant information in the D6 region when irregular eccentricity is introduced. In the figure, a is a schematic diagram of the surface height in the D6 region; b is a schematic diagram of the frequency domain information of the surface in the D6 region after two-dimensional fast Fourier transform; and c is a schematic diagram of the surface fluctuation information of the surface in the D6 radial direction in a.

[0049] Figure 9 is a schematic diagram showing the physical quantities of a microstructure surface with a circular edge in another embodiment of this application (i.e., when the surface structure needs to be constructed by a combination of tangential and / or radial undulations).

[0050] Figure 10.1 is a schematic diagram of the relevant information of the high-frequency lens unit when the microstructure surface is constructed only by radial fluctuation in another embodiment of this application, and the highest degree of the radial profile polynomial of the surface is 6. In this figure, a is a schematic diagram of the surface height of a single high-frequency lens unit; b is a three-dimensional schematic diagram of the surface of a single high-frequency lens unit; and c is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in the radial direction of the unit in a.

[0051] Figure 10.2 is a schematic diagram of relevant information in region D6 when the microstructure surface is constructed only by radial undulation in another embodiment and the highest degree of the radial profile polynomial of the surface is 6. In this diagram, a is a schematic diagram of the surface height in region D6; b is a schematic diagram of the frequency domain information of the surface in region D6 after two-dimensional fast Fourier transform; and c is a schematic diagram of the surface undulation information of the surface in region a in the radial direction of D6.

[0052] Figure 11 is a schematic diagram showing the relevant information of the surface structures in Figures 10.1 and 10.2 when regular eccentricity and irregular eccentricity are introduced, respectively.

[0053] Figure 12.1 is a schematic diagram of the relevant information of the high-frequency lens unit when the radial profile polynomial of the microstructure surface is constructed with the highest degree of 6 in another embodiment of this application, and the tangential fluctuation needs to be controlled to generate 8 fluctuation cycles, that is, when T2 is π / 2. In this figure, a is a schematic diagram of the surface height of a single high-frequency lens unit; b is a three-dimensional schematic diagram of the surface of a single high-frequency lens unit; and c is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in the tangential direction of the unit in a.

[0054] Figure 12.2 shows a schematic diagram of the relevant information in region D6 when the radial profile polynomial of the microstructure surface is constructed with a maximum degree of 6 in another embodiment, and the tangential fluctuation needs to be controlled to generate 8 fluctuation cycles, that is, when T2 is π / 2. In the figure, a is a schematic diagram of the surface height in region D6; b is a schematic diagram of the frequency domain information of the surface in region D6 after two-dimensional fast Fourier transform; c is a schematic diagram of the surface fluctuation information of the surface in region a in the radial direction of D6.

[0055] Figure 13 is a schematic diagram showing the relevant information of the surface structures in Figures 12.1 and 12.2 when regular eccentricity and irregular eccentricity are introduced, respectively.

[0056] Figure 14.1 shows a schematic diagram of the radial profile polynomial of the microstructure surface in another embodiment of this application, constructed using a 5th-order polynomial. The tangential fluctuation needs to be controlled to generate two fluctuation cycles, i.e., when T2 is 2π. In the figure, a is a schematic diagram of the surface height of a single high-frequency lens unit; b is a three-dimensional schematic diagram of the surface of a single high-frequency lens unit; c is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in the tangential direction of the unit in a; and d is a schematic diagram of the surface fluctuation information of the high-frequency lens unit in the radial direction of the unit in a.

[0057] Figure 14.2 shows a schematic diagram of the radial profile polynomial of the microstructure surface in another embodiment, which is constructed using a 5th-order polynomial. The tangential fluctuation needs to be controlled to generate two fluctuation periods, that is, when T2 is 2π, the relevant information in the D6 region is shown. In the figure, a is a schematic diagram of the surface height in the D6 region; b is a schematic diagram of the frequency domain information of the surface in the D6 region after two-dimensional fast Fourier transform; c is a schematic diagram of the surface fluctuation information of the surface in the radial direction of D6 in a.

[0058] Figure 15 is a schematic diagram showing the relevant information of the surface structures in Figures 14.1 and 14.2 when regular eccentricity and irregular eccentricity are introduced, respectively.

[0059] The attached diagram is labeled 1, Basic surface area; and 2, High-frequency control area. Detailed Implementation

[0060] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0061] It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. Furthermore, all other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0062] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0063] As an embodiment of the present invention, as shown in FIG1, an optical lens with high frequency disturbance information is provided. The optical lens includes: a basic surface area 1 and a high frequency control area 2.

[0064] The center of the basic surface area 1 coincides with the center of the optical lens, and the optical lens surface in the basic surface area 1 is used to form a clear visual image.

[0065] Specifically, the main purpose of the basic surface area 1 in this embodiment is to provide a clear field of vision for the human eye so as to clearly see external objects. Therefore, the area of ​​the basic surface area 1 needs to be greater than or equal to the area of ​​the normal visual field area of ​​the human eye (that is, the range on the lens corresponding to the angle of the eyeball rotation under normal circumstances). Typically, the diameter of the inscribed circle or circumscribed circle of the basic surface area 1 can be in the range of [2mm, 12mm].

[0066] This ensures that the basic surface area 1 can completely cover the clear area at the very center of the human eye's field of vision, thereby obtaining a clear visual effect from this area.

[0067] Correspondingly, the shape of the basic surface area 1 can be circular or polygonal, and the optical lens surface in the basic surface area 1 can also be spherical or aspherical. Specifically, the surface type and shape can be selected according to the actual needs of wearing the device.

[0068] As shown in Figure 1, the high-frequency control area 2 is disposed around the outer periphery of the base surface area 1. The high-frequency control area 2 includes multiple high-frequency lens units, which are arranged closely adjacent to each other. Typically, in order to achieve the close arrangement effect of the high-frequency lens units, the outer edge of the high-frequency lens units should be set as a regular polygon structure. Preferably, the regular polygon is an equilateral triangle, a square, or a regular hexagon.

[0069] The ratio P of the intensity of the high-frequency signal generated by the optical lens surface in high-frequency control region 2 to the intensity of all signals generated by the optical lens surface in high-frequency control region 2 is greater than the high-frequency proportion threshold. The signal intensity is the magnitude of the imaginary modulus of the signal component represented by each frequency domain point after performing a two-dimensional Fourier transform on the optical lens surface in high-frequency control region 2.

[0070] In this embodiment, the spatial information of the surface shape is converted into frequency domain information through a fast two-dimensional Fourier transform. Correspondingly, in the converted frequency domain information, the frequency range of the high-frequency signal can be set and selected according to actual needs. That is, in actual use, the value of the frequency limit can be finely adjusted according to the actual situation, and its corresponding value range can be [0.2mm]. -1 5mm -1 As shown in Figure 5.2, in this embodiment, the high-frequency signal can be a spatial frequency higher than 1 mm. -1 The signal (i.e., the location indicated by the red circle in the diagram; those inside the circle indicate P is less than 1mm) -1The signal is positive if P is greater than 1mm. -1 (The signal). Here, the frequency limit is set at 1mm. -1 This is to distinguish the high-frequency signal contained in the surface fluctuations within a single microstructure unit (i.e., a high-frequency lens unit) from the low-frequency signal contained in the periodic arrangement of microstructures in the overall microstructure array. Typically, in this field, the circumscribed circle diameter of the microstructure unit is not less than 1 mm, and the spatial period of the regular arrangement of microstructures in the array is greater than 1 mm, meaning the spatial frequency corresponding to the periodic arrangement of microstructures in the array is less than 1 mm. -1 .

[0071] Furthermore, the high-frequency proportion threshold is set in this embodiment to ensure sufficient high-frequency information in the entire high-frequency control area 2, thereby avoiding the influence of low-frequency information on visual imaging. Therefore, the high-frequency proportion threshold needs to be set according to the actual scenario. For example, the range of the high-frequency proportion threshold in this embodiment can be [0.7, 0.8], and the preferred value of the high-frequency proportion threshold is 0.8. In this invention, in order to ensure sufficient high-frequency information in the entire high-frequency control area 2, P within any D6 range (in this embodiment, a circular range with a diameter of 6mm) is greater than the high-frequency proportion threshold.

[0072] Each high-frequency lens unit has a surface structure with at least two height undulation cycles in at least one direction, either radial or tangential. Each pair of peaks and troughs in the surface structure constitutes one height undulation cycle. In this invention, local maxima in the height direction of the surface structure are peaks (as shown in Figure 5.1), and local minima are troughs (as shown in Figure 5.1). The unit tangential direction is the circumferential direction of the high-frequency lens unit, and the unit radial direction is any diameter direction of the high-frequency lens unit; the unit radial direction and the unit tangential direction are perpendicular to each other.

[0073] Specifically, in order to enable the surface profile of the high-frequency lens unit to generate more complex and varied high-frequency information, it is necessary to include more structural details in the actual surface profile design to generate more high-frequency information. In this embodiment, the purpose of increasing the structural details of the surface profile is achieved by setting multiple height undulation periods in the radial or tangential direction of the unit. For example, multiple height undulation periods can be set in the radial direction of the unit, or multiple height undulation periods can be set in the tangential direction of the unit, or multiple height undulation periods can be set in both the radial and tangential directions of the unit. Then, the height undulation periods in different directions are merged to form a more complex surface profile detail structure.

[0074] In another possible embodiment of the present invention, the microstructure surface center in the high-frequency lens unit is located at the geometric center of the high-frequency lens unit, or as shown in FIG3, the microstructure surface center in the high-frequency lens unit is offset relative to the geometric center of the high-frequency lens unit.

[0075] The sum of the eccentricity vectors V of each high-frequency lens unit within any eccentric region satisfies the following condition: |V| <a。

[0076] Where |V| is the modulus of V. i Let be the eccentric vector within the eccentric region, pointing from the geometric center of the high-frequency lens unit to the center of the microstructure surface after the high-frequency lens unit has shifted. n is the number of complete high-frequency lens units within the eccentric region, n≥2. a<0.2nR, where R is the radius of the circumcircle of the high-frequency lens unit.

[0077] Specifically, by shifting the center of the microstructure surface of at least a portion of the high-frequency lens units in the high-frequency control region 2 along random directions, not only can the distribution of high-frequency signals generated within the high-frequency lens units become irregular, but the distribution of high-frequency signals throughout the entire high-frequency control region 2 can also become more random. This further enhances the distinctiveness of perturbation signals in various directions within the high-frequency control region 2, providing the retina with continuously changing dynamic stimulation to slow down the retina's adaptation speed and enhance the persistence of the control effect.

[0078] In this invention, embodiments of the microstructure surface profiles of various high-frequency lens units are provided as follows:

[0079] Firstly, in this embodiment, the top view edge of the microstructure surface is a regular polygon. In this embodiment, the height Z(r) of any point in the surface structure of the high-frequency lens unit satisfies the following condition:

[0080] As shown in Figure 4, r is the projected distance between the current point and the center of the microstructure surface, and r0 is the length of the radial section containing the current point. The length r0 of the radial section needs to be selected according to actual needs. All radial sections in the microstructure surface form a regular polygon, specifically an equilateral triangle, square, or regular hexagon. A1 is the microstructure amplitude. The value of A1 affects the difference between the highest and lowest points in the microstructure surface. In actual production, it is necessary to consider both the feasibility of processing and the impact on the filling of the surface structure after lens coating. Therefore, in actual use, A1 needs to be set according to the actual situation, and it can usually be [0.5um, 5um]. T1 is the normalization period, T1∈(0,1).

[0081] Specifically, this embodiment provides a surface structure with square and regular hexagonal edges in the top view of the microstructure surface. In the above construction formula, A1 = 3 μm, T1 = 2 / 3, thus ensuring that there are 3 radial cycles of surface undulations in the entire microstructure surface. In addition, the circumcircle diameter of both the square and the regular hexagon is 1.32 mm. Specifically, Figures 5.1 and 5.2 show the relevant situation of the surface structure with regular hexagonal edges in the top view of the microstructure surface. As can be seen from the figure, in the high-frequency control region 2 composed of densely packed regular hexagonal radial undulating microstructures, the unit tangentially within a single high-frequency lens unit has 12 subtle undulation cycles, and the unit radially has 3 undulation cycles, thereby generating more high-frequency disturbances. Moreover, within the D6 range, the spatial frequency is greater than 1 mm. -1 The signal percentage P = 83.8% > 0.8.

[0082] Figures 6.1 and 6.2 show the top view of a microstructure surface with hexagonal edges and a regularly offset center. When constructing the offset, firstly, the center of the offset microstructure surface needs to be determined. Specifically, as shown in Figure 4, the new center of the offset microstructure surface can be determined using the original center and the offset amount q. Then, the corresponding eccentric surface is generated according to the aforementioned surface construction formula.

[0083] As shown in the figure, the microstructure after regular hexagonal eccentricity (i.e., the eccentricity direction of different eccentric units remains consistent) breaks the rotational symmetry of the original microstructure, making the high-frequency perturbations in different directions within the unit different, and enhancing the randomness of the perturbation. Moreover, within the D6 range, P = 83.1% > 0.8.

[0084] Figures 7.1 and 7.2 show the top view of the microstructure surface with hexagonal edges and irregular offset at the center. As can be seen from the figures, the introduced irregular eccentricity (i.e., the eccentricity directions of different eccentric units are not the same) results in different eccentricities and positions between different units, further enhancing the randomness of the perturbation and slowing down the retina's adaptation to the perturbation signal. Furthermore, within the D6 range, P = 83.9% > 0.8.

[0085] Figures 8.1 and 8.2 show the top view of the microstructure surface with square edges. As can be seen from the figures, in the high-frequency control region 2, composed of densely packed square radially undulating microstructures, each high-frequency lens unit has 8 minute undulating cycles tangentially and 3 undulating cycles radially. Furthermore, within the D6 range, P = 86.1% > 0.8. Correspondingly, the center of the microstructure surface in this square structure can also be regularly or irregularly offset to form more random high-frequency perturbations.

[0086] Secondly, in this embodiment, the top view edge of the microstructure surface is circular. To conform to the polygonal structure of the high-frequency lens unit, the surface structure in this embodiment needs to be cut into corresponding regular polygons along the edge. In this embodiment, the surface structure of the high-frequency lens unit is generated by controlling the radial and tangential fluctuations of the microstructure.

[0087] The radial fluctuations of the microstructure are generated in a controlled manner as follows: Specifically, the height Z1(r) of any point r away from the center of the microstructure surface in the surface structure of the high-frequency lens unit satisfies the following condition:

[0088] Where, as shown in Figure 9, r is the projected distance between the current point and the center of the microstructure surface. d is the diameter of the circumcircle of the microstructure surface. α j represents the coefficient of the j-th term of the radial profile polynomial of the microstructure surface, and w represents the degree of the highest-degree term of the radial profile polynomial of the microstructure surface. Profile polynomials are crucial tools in optical design and manufacturing. By setting and adjusting different polynomials and coefficients, more complex curves and surfaces can be generated. In this embodiment, the radial profile can be constructed using profile polynomials.

[0089] The tangential fluctuations of the microstructure are generated in a controlled manner as shown in Figure 9. With the center of the microstructure surface as the origin and the positive horizontal direction as the reference axis (i.e., the x-axis), the height Z2(θ) of each point on the radial section of the surface structure of the high-frequency lens unit at an angle θ to the reference axis satisfies the following condition:

[0090] Where A2 is the tangential amplitude of the microstructure, which, when combined with the amplitude in the radial wave, generates the amplitude of the entire microstructure. Therefore, the amplitude value can be determined by referring to the factors considered in the value of A1 mentioned above. T2 is the angular period, and its value is an angle value. In this tangential wave construction formula, the number of undulation periods in the tangential direction is mainly adjusted by the value of T2. For example, T2 can be π / 2. θ0 is the adjustment phase, used to determine the initial value of Z2(θ) when θ is 0.

[0091] In this embodiment, the surface requirements of the microstructure can be met by constructing radial or tangential ripples alone, or by using a combination of radial and tangential ripples (such as Z(r,θ)=Z1(r)×Z2(θ) or Z(r,θ)=Z1(r)+Z2(θ) and other existing fusion methods) to meet the surface requirements of the microstructure.

[0092] Specifically, the following examples of microstructure surface features are provided for illustration:

[0093] As shown in Figures 10.1 and 10.2, only radial undulations are constructed. Specifically, the radial profile polynomial of this surface is constructed using a 6th-order polynomial with d = 1.52 mm. The constructed microstructure surface, as shown in Figures 10.1 and 10.2, is derived from piecewise deformation of the unit radial direction using a polynomial function, exhibiting four undulation periods. Furthermore, as shown in Figure 11, regular or irregular eccentric structures can be introduced into this microstructure surface to create more random high-frequency perturbations.

[0094] As shown in Figures 12.1 and 12.2, radial and tangential undulations are constructed simultaneously. Specifically, the radial profile polynomial is constructed using a 6th-order polynomial, and the tangential undulations are controlled to generate 8 fluctuation periods, i.e., T2 is π / 2. In this embodiment, θ0 is 0, and d = 1.52 mm. Specifically, the constructed microstructure surface is shown in Figures 12.1 and 12.2. The radial element is derived from a piecewise deformation of a polynomial function, similar to the surface with only radial undulations described above. The radial undulations have 4 fluctuation periods, while the tangential elements vary piecewise according to a sine function, resulting in 8 fluctuation periods. Furthermore, as shown in Figure 13, regular or irregular eccentric structures can be introduced into this microstructure surface to create more random high-frequency perturbations.

[0095] As shown in Figures 14.1 and 14.2, radial and tangential undulations are constructed simultaneously. Specifically, the radial profile polynomial is constructed using a 5th-order polynomial, and T2 in the tangential undulation is 2π. In this embodiment, θ0 is 0, and d = 1.52 mm. Specifically, the constructed microstructure surface is shown in Figures 14.1 and 14.2. The radial element is derived from a piecewise polynomial function deformation, and the tangential element varies piecewise according to a sine function. The radial / tangential aspects have 4 / 2 undulation cycles, allowing for the simultaneous introduction of high-frequency perturbations in both the tangential and radial directions. Furthermore, as shown in Figure 15, regular or irregular eccentric structures can be introduced into this microstructure surface to create more random high-frequency perturbations.

[0096] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An optical lens with high frequency perturbation information, characterized in that, The optical lens includes: a basic surface area and a high-frequency control area. The center of the basic surface area coincides with the center of the optical lens, and the optical lens surface located in the basic surface area is used to form a clear visual image. The high-frequency control region surrounds the outer periphery of the basic surface area. The high-frequency control region includes multiple high-frequency lens units arranged closely adjacent to each other. The ratio of the intensity of the high-frequency signal generated by the optical lens surface in the high-frequency control region to the intensity of all signals generated by the optical lens surface in the high-frequency control region is greater than a high-frequency proportion threshold. The signal intensity is the magnitude of the imaginary modulus of the signal component represented by each frequency domain point after a two-dimensional Fourier transform of the optical lens surface in the high-frequency control region. The high-frequency signal is a signal with a spatial frequency higher than a frequency limit. The frequency limit ranges from [0.2 mm]. -1 5mm -1 ]; Each high-frequency lens unit has a surface structure with at least two height undulation cycles in at least one direction, either radial or tangential. Each pair of peaks and troughs in the surface structure constitutes one height undulation cycle. Local maxima in the height direction of the surface structure are peaks, and local minima are troughs. The tangential direction is the circumferential direction of the high-frequency lens unit, and the radial direction is any diameter direction of the high-frequency lens unit.

2. The optical lens with high frequency perturbation information according to claim 1, characterized in that, The center of the microstructure surface in the high-frequency lens unit is located at the geometric center of the high-frequency lens unit, or the center of the microstructure surface in the high-frequency lens unit is offset relative to the geometric center of the high-frequency lens unit. The sum of the eccentricity vectors and V of each high-frequency lens unit within any eccentric region satisfies the following condition: |V| <a; Where |V| is the modulus of V; Vi is the eccentric vector within the eccentric region that points from the geometric center of the high-frequency lens unit to the center of the microstructure surface after the high-frequency lens unit is offset; n is the number of complete high-frequency lens units within the eccentric region, n≥2; a<0.2nR, where R is the radius of the circumcircle of the high-frequency lens unit.

3. An optical lens with high frequency perturbation information according to claim 2, characterized in that, The height Z(r) of any point in the surface structure of the high-frequency lens unit satisfies the following condition: Where r is the projected distance between the current point and the center of the microstructure surface; r0 is the length from the center of the microstructure surface to the boundary of the corresponding microstructure surface on the radial section where the current point is located, and the shape formed by all radial sections in the microstructure surface is a regular polygon; A1 is the microstructure amplitude; T1 is the normalized period, T1∈(0,1).

4. The optical lens with high frequency perturbation information according to claim 3, wherein, The regular polygon is an equilateral triangle, a square, or a regular hexagon.

5. The optical lens with high frequency perturbation information according to claim 2, wherein, The height Z1(r) of any point in the surface structure of the high-frequency lens unit that is a distance r from the center of the microstructure surface satisfies the following condition: Where r is the projected distance between the current point and the center of the microstructure surface; d is the diameter of the circumcircle of the microstructure surface; α j is the coefficient of the j-th term of the radial profile polynomial of the microstructure surface, and w is the degree of the highest-degree term of the radial profile polynomial of the microstructure surface.

6. The optical lens with high-frequency disturbance information according to claim 2, characterized in that, With the center of the microstructure surface as the origin and the positive horizontal direction as the reference axis, the height Z2(θ) of each point on the radial section of the surface structure of the high-frequency lens unit that forms an angle θ with the reference axis satisfies the following condition: Where A2 is the tangential amplitude of the microstructure; T2 is the angular period, and T2 is the angular value; θ0 is the phase adjustment.

7. The optical lens with high-frequency disturbance information according to claim 2, characterized in that, The height of any point in the surface structure of the high-frequency lens unit is generated by fusing the height of the radially undulating surface and the height of the tangentially undulating surface. The height Z1(r) of the radial undulation profile satisfies the following condition: Where r is the projected distance between the current point and the center of the microstructure surface; d is the diameter of the circumcircle of the microstructure surface; α j is the coefficient of the j-th term of the radial profile polynomial of the microstructure surface, and w is the degree of the highest-degree term of the radial profile polynomial of the microstructure surface. The height of the tangential wave profile satisfies the following condition: With the center of the microstructure surface pattern as the origin and the horizontal positive direction as the reference axis, the height Z2(θ) of each point on the radial cross section of the surface pattern structure of the high-frequency lens unit at an angle θ to the reference axis satisfies the following condition: Where A2 is the tangential amplitude of the microstructure; T2 is the angular period, and T2 is the angular value; θ0 is the phase adjustment.

8. The optical lens with high frequency perturbation information according to claim 1, wherein, The frequency limit is 1 mm -1 .

9. The optical lens with high frequency perturbation information according to claim 1, wherein, The outer edge of the high-frequency lens unit is a regular polygon structure, which is an equilateral triangle, a square, or a regular hexagon.

10. The optical lens with high frequency perturbation information according to claim 1, wherein, The value range of the high frequency ratio threshold is [0.7, 0.8].

11. The optical lens with high frequency perturbation information according to claim 7, wherein, The high-frequency percentage threshold is set to 0.

8.

12. The optical lens with high frequency perturbation information according to claim 1, wherein, The basic surface area is circular or polygonal, and the area of ​​the basic surface area is greater than or equal to the area of ​​the projection area of ​​the normal visual field of the human eye on the optical lens. The optical lens surface in the basic surface area is spherical or aspherical.

13. The optical lens with high frequency perturbation information according to claim 9, wherein, If the base surface area is circular, then the diameter of the base surface area is in the range of [2mm, 12mm].

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